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A Method to Quantify Visual Information Processing in Children Using Eye Tracking
Published on: July 9, 2016
Ocular morphology and visual function in relation to general growth in moderate-to-late preterm school-aged children
Lina H Raffa1,2, Jovanna Dahlgren3, Ann Hellström4
1Department of Ophthalmology, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. lina_raffa@yahoo.com.
Insights
Moderate-to-late preterm children have reduced macular volume at age eight. General growth and insulin-like growth factor I (IGF-I) influence ocular development in these children.
Area of Science:
- Ophthalmology
- Pediatric Growth Studies
- Developmental Biology
Background:
- Preterm birth can impact long-term health and development.
- Ocular development may be affected by growth factors and overall growth patterns.
Purpose of the Study:
- To investigate ocular morphology and visual function in relation to general growth in moderate-to-late preterm (MLP) children.
- To compare ocular parameters between MLP children and full-term controls.
Main Methods:
- Evaluated visual acuity, refraction, optic disc parameters, and anthropometric measures in 50 eight-year-old MLP children and 43 full-term controls.
- Assessed macular parameters using optical coherence tomography.
- Analyzed serum insulin-like growth factor I (IGF-I) levels at birth and follow-up.
Main Results:
- MLP children exhibited significantly reduced total macular volume compared to controls.
- Macular volume correlated with head circumference and refraction in MLP children.
- Central retinal thickness showed significant correlations with delta IGF-I and refraction; optic disc area correlated with weight and height.
Conclusions:
- MLP children have significantly less macular volume at 8 years of age.
- General growth and IGF-I levels appear to play a role in ocular development and morphology in children born moderate-to-late preterm.
Purpose:
To study ocular morphology and visual function in relation to general growth in moderate-to-late preterm (MLP) children.
Methods:
Visual acuity (VA), refraction, optic disc parameters, biometric values and anthropometric measures were obtained from 50 eight-year-old MLP and 43 full-term children. Macular parameters were examined by optical coherence tomography. Serum insulin-like growth factor I (IGF-I) levels were analysed at birth and at assessment and delta IGF-I was calculated.
Results:
Total macular volume was significantly less in MLP than in controls (both eyes p < 0.01). Macular volume correlated with head circumference (HCF) at assessment [right eye (RE) p = 0.002, r = 0.67; left eyes (LE) p = 0.01, r = 0.54] and refraction (both eyes p < 0.05, r = 0.4) in the MLP children. Furthermore, central retinal thickness correlated significantly with delta IGF-I (RE p = 0.03, r = -0.51, LE p = 0.006, r = -0.59) and refraction (both eyes p < 0.01, r = 0.5) and optic disc areas correlated with weight and height at assessment (all p < 0.05, r = 0.4). Total axial length correlated with HCF at assessment (both eyes p < 0.01, r = 0.5) and VA logMAR (both eyes p < 0.02, r = -0.4).
Conclusions:
Macular volume was significantly less in MLP children than in controls examined at 8 years of age. General growth of children and IGF-I levels seem to be involved in development of ocular growth and morphology.
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